Thank you for taking the time to participate in this experiment. The task you will be asked to perform is _not_ a test of your ability to listen. Rather, it is a test of an algorithm for processing audio material. There is no "right" answer to the questions on this form. During this experiment, you will hear three musical selections. For each selection, you will hear an original and four compressed versions, labeled A through D. Please rate the selections according to the following criteria: - Overall quality: How well, overall, does the compressed version match the original? - Ambiance: How well does the compressed version reproduce the reverberance of the original? - Percussive Sharpness: Do sharp vocal or instrumental attacks remain sharp on the compressed version? PLEASE RATE ALL CATEGORIES FROM 1 (highly unlike the original) TO 7 (indistin- guishable from the original) For example: Overall quality A ( 3) B ( 5) C ( 4) D ( 4) Ambience A ( 5) B ( 7) C ( 6) D ( 5) Percussive sharpness A ( 4) B ( 6) C ( 5) D ( 6)

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1. Mussorgsky "Pictures at an Exhibition" I Overall quality A ( ) B ( ) C ( ) D ( ) Ambience A ( ) B ( ) C ( ) D ( ) Percussive sharpness A ( ) B ( ) C ( ) D ( ) 2. Blumlein microphone demo Overall quality A ( ) B ( ) C ( ) D ( ) Ambience A ( ) B ( ) C ( ) D ( ) Percussive sharpness A ( ) B ( ) C ( ) D ( ) 3. Tori Amos "Blood Roses" Overall quality A ( ) B ( ) C ( ) D ( ) Ambience A ( ) B ( ) C ( ) D ( ) Percussive sharpness A ( ) B ( ) C ( ) D ( ) 4. Mussorgsky "Pictures at an Exhibition" II Overall quality A ( ) B ( ) C ( ) D ( ) Ambience A ( ) B ( ) C ( ) D ( ) Percussive sharpness A ( ) B ( ) C ( ) D ( )